EAGER Collaborative Research: Exploring dust impacts on terrestrial ecosystem processes using an innovative and integrated approach

EAGER 协作研究：使用创新和综合方法探索灰尘对陆地生态系统过程的影响

• 批准号: 1600902
• 负责人: Alexandra Ponette
• 金额: $ 3.66万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-11-15 至 2017-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1600902&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Exploring; dust

Mineral dust constitutes a critical nexus between the geosphere, atmosphere, biosphere, and hydrosphere. One of the most abundant atmospheric aerosols by mass, mineral dust can influence numerous ecosystem processes through its effects on climate and biogeochemistry. Dust supplies essential limiting nutrients as well as toxic pollutants to ecosystems, with long-term implications for elemental cycling. This project will address the considerable uncertainties regarding dust influence on terrestrial ecosystem processes, including wet dust deposition, carbon uptake, and evapotranspiration. It will maximize financial and societal return from publicly available data, provide training for the next generation scientific workforce, and broaden the participation of underrepresented groups in science.This highly interdisciplinary project will develop the foundation for testing an integrative framework for conceptualizing dust events, dust sinks, and ecosystem interactions during a period of historic drought. It will: (1) characterize dust events during a period of widespread severe to exceptional drought; 2) analyze the chemical composition and quantify the magnitude of wet dust deposition; (3) quantify the influence of dust events on ecosystem light use efficiency, water use efficiency, and carbon sequestration. The project integrates research and education with students at all levels, including a concerted effort to recruit underrepresented students. The team will produce a lecture and laboratory module on drought and dust in arid and semi-arid regions. The project will contribute to the career development of one early career and one postdoctoral scholar (both female and Hispanic).

矿物灰尘构成地质，大气，生物圈和水圈之间的关键联系。矿物灰尘是最丰富的大气气溶胶之一，可以通过对气候和生物地球化学的影响影响众多生态系统过程。灰尘供应对生态系统的必不可少的限制营养以及有毒污染物，对元素循环产生了长期影响。该项目将解决有关尘埃对陆地生态系统过程影响的大量不确定性，包括湿尘，碳摄入量和蒸散量。它将从公共数据中最大化财务和社会回报，为下一代科学劳动力提供培训，并扩大代表性不足的群体参与科学的参与。这项高度的跨学科项目将为概念化综合框架，以概念化概念性的框架，以概念化尘埃事件，尘土水槽和生态系统互动，并在历史悠久的境地期间进行生态系统互动。它将：（1）在普遍到特殊干旱时期表征灰尘事件； 2）分析化学成分并量化湿灰尘沉积的幅度； （3）量化灰尘事件对生态系统光利用效率，用水效率和碳固存的影响。该项目将研究和教育与各个级别的学生整合在一起，包括一致招募代表性不足的学生的努力。该团队将在干旱和半干旱地区进行有关干旱和灰尘的讲座和实验室模块。该项目将有助于一个早期职业的职业发展和一位博士后学者（包括女性和西班牙裔）。